CODEWITHSUNDEEP
javaarraysstring
whiteTIGER
whiteTIGER

Reputation: 401

How to Convert a vector string to simple string

I need to convert a string vector in a simple string. I do not know how to proceed. I tried various solutions such as

for(int i=1; i < easy.length; i++){

easyPuzzle = easy[i].toString();

}

System.out.println(" " + easyPuzzle);

but this solution prints only the ith element and not the entire string vector.

Upvotes: 1

Views: 337

Answers (3)

assylias
assylias

Reputation: 328598

You keep reassign a new value to easyPuzzle when you really want to concatenate:

easyPuzzle += easy[i].toString();

If easy.length is large, it might make sense to use a StringBuilder which is more efficient at concatenating than String:

StringBuilder builder = new StringBuilder();
for(int i=1; i < easy.length; i++){
    builder.append(easy[i].toString());
}
easyPuzzle = builder.toString();

Also by starting your for loop at i=1 you exclude the first item. Not sure if it is on purpose or not. If not, start at i = 0.

Alternatively, to save the pain of writing the loop yourself, you can use @Manoj's answer which replaces your code by one line.

Upvotes: 7

Simon Dorociak
Simon Dorociak

Reputation: 33495

I recommend to you use StringBuilder with append(<data>) method and then convert it to String.

StringBuilder data = new StringBuilder();
for(int i = 1; i < easy.length; i++){
    data.append(easy[i].toString());
}
easyPuzzle = data.toString();

String is immutable so work with it is much more consume. When you work with String, i recommend to you use StringBuilder, is more effective and faster.

Update: @Manoj answer is very usefull.

Upvotes: 2

Manoj
Manoj

Reputation: 5612

Use toString in Arrays class 

Arrays.toString(easy);

Upvotes: 9

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